Pith Number

pith:X44SCGZB

pith:2015:X44SCGZBOTD3FZP3YWRQ7DEUBS

not attested not anchored not stored refs pending

Sunspot areas and tilt angles for solar cycles 7-10

M. Dasi-Espuig, N. Krivova, R. Arlt, S. Solanki, V. Senthamizh Pavai

arxiv:1508.07849 v1 · 2015-08-31 · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{X44SCGZBOTD3FZP3YWRQ7DEUBS}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:25:38.463385Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf39211b2174c7b2e5fbc5a30f8c940c942403c4af0ff3694193fe8f0b664e7f

Aliases

arxiv: 1508.07849 · arxiv_version: 1508.07849v1 · doi: 10.48550/arxiv.1508.07849 · pith_short_12: X44SCGZBOTD3 · pith_short_16: X44SCGZBOTD3FZP3 · pith_short_8: X44SCGZB

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/X44SCGZBOTD3FZP3YWRQ7DEUBS \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: bf39211b2174c7b2e5fbc5a30f8c940c942403c4af0ff3694193fe8f0b664e7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c81c1a0b04ff1c8f9f075e460961b058773e0657e700b0bba8661fa17b249d2c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-08-31T14:37:07Z",
    "title_canon_sha256": "7c423a297b9ee05260d84f16bfb106781aff9f59540f597a3bde4a028f794170"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.07849",
    "kind": "arxiv",
    "version": 1
  }
}